Machine for cutting off blanks for needles



(No Model.) 3 Sheets-Sheet 1.

E. S. PARSONS.

MACHINE. EOE CUTTING oEE BLANKS FOR NEEDLES.

No."394,661. Patented Dec. 18 1888.

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(No Model.) 3 Sheets-Sheet 2.

E. S. PARSONS.

MACHINE EOE CUTTING OFF BLANKS FOR NEEDLES.

N0. 394,661. Patented Dec. 18, 1888.

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(No Model.)

B. s. PARSONS.

MACHINE FOR CUTTING OPP BLANKS FOR NEEDLES.

No. 394,661. Patented Dec. 18, 1888.

. WITNESSES INVENTOR gfM ATTORNEY NIPETERS. mlouuwyn hu. Wnhingmn. 04:.

UNITED STATES PATENT OFFICE.

EMORY S. PARSONS, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MAXIFACTI RING COMPANY OF NE JERSEY.

MACHINE FOR CUTTING OFF BLANKS FOR NEEDLES.

SPECIFICATION forming part of Letters Patent No. 394,661, dated December18, 1888. Application filed July 6,1888. Serial No. 279,170. (No model.)

To aZZ whom it may concern..-

Be it known that I, EMORY S. PARSONS, a citizen of the United States,residing at Elizabeth, in the county of Union and State of New Jersey,haveinvented certain new and useful Improvements in NeedleBlank-CuttingMachines, of which the following is a specification, reference being hadtherein'to the ac- I companyin g d rawin The object of my invention isto provide a simple an d reliably-operatin g machine forcutting offblanks for sewingmachine needles from a continuous length of wire, theblanks being severed in such a manner that the ends thereof are smoothand of uniform shape, and the wire from which the blanks are out beingfed forward automatically as the cutting operations continue.

To this end I have constructed the machine illustrated in theaccompanying drawings, in which Figure 1 is a side elevation, partlybroken away, of my improved machine. Fig. 2 is a plan view of the same.Fig. 3 is a longitudinal sectional elevation of the same on a largerscale than Figs. 1 and 2, some parts at the ends of the machine beingomitted. Fig. 4 is a detail side view of the cutter-head and adjacentparts. Fig. 5 is a plan view of the parts shown in Fig. at. Fig. 6 is adetail side view of the circular cutter. Fig. 7 is a section of thecutter-head and cutter-carrying slide and the regulating-gage for thelatter. Fig. 8 illustrates the operation of the cutter. Fig. 9 is adetail sectional view to illustrate the wire-feeding clamp. Fig. 10 is adetail end view of the wire-feeding slide forming part of thewire-feeding clamp. Fig. 11 is a detail section of the cam. whichoperates the wire-feeder. Fig.1? is a plan view of said cam, showing thewire-feeding lever in section. Fig. 13 is a diagram or projection ofthewirefeeding cam.

A denotes the bed of the machine, provided with hangers a, in which isjournaled a camshaft, 3, provided with a gear-wheel, 9,1neshing wit-l1 apinion, 10, rigidly connected with a driving-pulley, 8, rotating on asuitable shaft or stud attached to the bed or machineframe, saidcam-shaft carrying the wire-feeding cam-disk ll, the chuck-operatingcams N and N, and the eutter-slide-opcrating cam V B is a rotarywire-straightener mounted in a bracket, attached to the bed A.

l) is a bracket attached to bed A and provided with a guiding-slot, d,in which slides the clamping wire-feeder consisting of the block c, ofthe form indicated by dotted lines, Fig. It), and having the flanges Eand E and the cla1npingdisk F. The flanges E and E embrace the upperpart of the bracket D, as shown in Fig. 9, the flange E being integralwith the block and the flange E being attached to said block by screws6, as shown in Fig. ll). Passing loosely through the disk F and flangedblock 6 is a bolt, 6 having a head impinging against said disk, saidbolt being secured to the upper end of a lever, G, pivoted at its lowerend to a bracket, G, attached to the bed A. The bolt e passes looselythrough the said lever and is attached to the latter by the nuts 6 Thelever G is provided with a roller-stud,

6, which is held in contact with a slide or face cam, h, on the cam-diskH by a spring, I, said 5 lever having also a hardened plate, 7, let intoit in proper position to be engaged by the peripheral cam h on the saidcam-disk. The said peripheral cam h, acting against the plate 7, willimpart a slight lateral movement to the lever G, and thus cause the bolt6 to force the disk F toward the flange E, and thereby clamp or graspthe wire passing between said disk and flange, so that as the lever G ismoved forward by the face-cam h acting against the roller stud l; thewire thus grasped will be fed forward a distance equal to the throw ofthe wire-feeding clamp. The cams h and h are so constructed that theyboth act 011 the lever G at the same time, and thus when the 0 saidlever reaches the forward end of its stroke the wire will be released,and the wirefeeding clamp can then move freely backward as the lever isretracted by the spring I.

The bracket D is provided with adjusting- 5 screws (1 The screw (1limits the backward movement of tlfe wire-feeding clamp and lever G, andthus determines the length of feed, and the screw (Z is adjusted so asto prevent overthrow of the wire-feeding clamp, so

ably secured the circular cutter 'w.

that the feed will always be exactly uniform for a given adjustment ofthe screw d.

Attached to the bracket D is an angle-black et, J, which serves as asupport for the rear end of a tube, j, through which the wire passes tothe chucks and on which slides the sleeve L, having an inclined innerface at its forward end to operate the rear chuck, 0, carried by thechuck-spindle K, the latter having a screwthreaded connection with saidtube. The rear end of the sleeve L is threaded to receive a screw collaror nut, M, having pins resting in notches in the upper forked end of alever, N, pivoted to a part of the bracket D, and having at its lowerenda pin or roller-stud, n, which enters the groove of the cam N on theshaft 3.

O is the forward chuck carried by the spindle K, having a screw-threadedconnection with the tubej, supported by the bracket J, attached to thebed. A. The said chuck O is operated to cause it to bite the wire by thesliding sleeve L, having an inclined inner face at its operating end,and on said sleeve is mounted the screw-collar M, provided with pinsresting in the forked upper end of the lever N pivoted to the bracket J,said lever having a pin or roller-stud, of, entering the groove of thecam i and the said sleeve L,

sliding in a tube, a fastened in the support A on the bed A.

having bearings in the spindle-head or support Q, fastened to the bed A.Attached to the forward end of the spindle or shaft Q is the cutter-headNV, which is provided witha dovetailed recess for the reception of theslide .X, to which is screwed or otherwise suit- The screwfor bolt bywhich the circular cutter w is secured to the slide X holds the saidcutter rigid with relation to the said slide, so that as the latterrotates with the cutter-head the cutter will act against the wire to besevered in the same manner that an ordinary cuttingdie would as thecutter-carrying slide is forced inward. The said cutter-head is alsoprovided with the bushing 5, through which the wire passes to the saidcutter.

joints of the said slide.

Partlybeneath the spindle head or support '62 is a'slide U, having aroller-stud, V, entering the groove of the cam, V on the shaft 3, thesaid slide having an upwardly-eXtending arm, 16, engaglng a sleeve, R,connected with The front of the slide X is covered by a sheet-metal,"guard, 4, to prevent chips from clo ing the enters a slot, 22in anadjusting-gage, Z, attached to the cutter-carrying slide X. As the slideU and sleeve R move forward, the cut ter-carrying slide X will beoperated to force the cutter inward to sever the wire, and as the leverT has an adjustable connection with said slide X through the gage Z itis obvious that the inward movements of the cutter can be regulated withgreatest exactness, the incline or former S and cam X being shaped toallow a rest to the cutter after the blank is severed to make a smoothand uniform end to the wire from which the next blank is to be formed.

Between the gage Z and the bushing 5 is a spring, .2, received in arecess in said gage, said spring serving to effect the outward movementof the cutter-carrying slide and to hold the rear end of the lever Tagainst the incline or former S.

The gage Z is preferably attached to the slide X by the screws ,2" 2 theformer arranged to push the said gage outward by abutting against saidslide, and the screws .2 serving to draw said gage inward by beingtapped in the slide, all as clearly shown in Fig. 7.

XV hen the machine is in operation, the shaft Q is rapidly rotated by abelt running on the pulley P, and the cam-shaft 3, operatingindependently of the shaft Q, is more slowly rotated from the pulley 8through the pinion 10 and gear 9,. The wire is fed forward by thefeeding-clamp consisting of the block 6, its flange E, and the disk F tothe chucks O and O, the said chucks being operated to grasp the wire bythe sliding sleeves L and L, the operating mechanism of the said chucksbe ing so timed that they will grasp the wire before the feeding-lever Gflies back, a shortrest being allowed said lever afterithas completedits forward stroke, will be understood from the shape of the cam h, asshown by Fig. 13, to give the chucks time to grasp the wire. lVhen thewire has been grasped by the chucks, the slide U and sleeve Rm'oveforward, and the incline or former S on the latter causes the lever T toforce the cuttercarrying slide X inward, and thus cause the cutterrotating with the cutter-head and traveling around the wire to impingeagainst the latter and sever the blank, a rest being given to the cutterat the end of its inward movement after a blank has been severed tosmooth the end of the wire from which the next blank is to be cut, ashereinbefore stated. The sev-- ered blanks are pushed forward throughthe chuck-spindle K and the tube j, falling from the latter into anyproper receptacle which may be placed for them. Thus the operationcontinues, cutting the blanks automatically so long as the machine is inmotion and is supplied with wire.

Although I have described my. machine as specially designed for cuttingblanks 'forsewing-machine needles, it is obvious that itfmay g be usedfor cutting other blanks from a con tinuous wire, and I do not,therefore, Wish to be understood as limiting the use of my machine tocutting needle-blanks. It will also be understood that the details of mymachine may be varied Within the province of mechanical skill withoutdeparting from the spirit of my invention.

Having thus described my invention, I claim and desire to secure byLetters Patent 1. In a needle-blank-cutting machine, the combination,with a rotary wire-straightener and a wire-feeder, of two wire-holdingchucks and a rotary cutter arranged to sever the wire between the saidchucks.

2. In a needle-blank-eutting machine, the combination, with awire-feeder and two wireholding chucks, of a rotary cutter-head, acutter-carrying slide mounted in said head, a cutter rigidly secured tosaid slide and arranged to sever the wire between the said chucks, alever pivoted to said head and serving to operate said slide, and asliding sleeve rotating with said head and having an incline or formerto operate said lever.

In a needle-blank-eutting machine, the combination, with a rotaryspindle or shaftand a cutter-head attached thereto, of a cutter-carryingslide mounted in said head, a lever for operating said slide, a slidingsleeve rotating with said sh aft and having an incline or former foroperating said lever, a wirefeeder, two wire-holding chucks, a cam-shaftrotating independently of the cutter-carrying shaft; and having camsconnected with and serving to operate said wire-feeder, chucks, andsliding sleeve.

l. In a needle-blank-cutting machine, the combination, with two hollowchuck-spindles and two chucks carried thereby, of two sliding sleeveshaving inclined ends to operate said chucks and cause them to grasp thewire, a rotary cutter arranged to sever the wire between said chucks,two levers to operate said sleeves, and a cam-shaft having cams tovibrate said levers.

5. The combination, with the bracket D, having the angle-plate J, of thetube j, attached to the said angle-plate, the chuck-spindle K, attachedto said tube, the chuck O on said spindle, the sliding sleeve L, havingthe flaring or inclined forward end to close the jaws of the said chuck,the screw collar or nut .M on said sleeve, the lever N, the cam N, theshaft 3, and the hollow shaft Q, in which said sleeve slides.

6. The combination, with the bracket J, of the tube j, attached thereto,the chuck-spindle K, connected to said tube, the chuck 0, carried bysaid spindle, the sliding sleeve L to close the jaws of the said chuck,the screw collar or nut M, the lever N the cam N the shaft 3, and atubular or hollow support in which said sleeve slides.

7 The combination, with the bed A, of the spindle head or support Qthereon, the spindle or shaft Q, journaled in bearings in said supportand provided with the pulley P, the sliding sleeve R, splined orotherwise connected to said shaft to rotate therewith, the slide U toreciprocate said sleeve, the st ml or pin V, the cam V and the shaft 3.

8. The combination, with the spindle or shaft Q, of the cutter-head IV,secured thereto, the slide X, mounted in said cutter-head, the cutterw,carried by said slide, the slide-operating lever T, the gage Z, formingan adjustable connection between said lever and slide, and the slidingsleeve R, having the former or incline S to operate said lever.

9. The combination, with the shaft Q, the cutter-head \V, and thecutter-carrying slide X, of the gage Z, having the slot 2 the screw 2,abutting against said slide, the screw 2 tapped in said slide, the leverT, having a rounded forward end entering said slot, the spring 2, andthe slidingv sleeve R, having the incline or former S.

10. The combination, with the cutter-head W and the cutter-carryingslide X, of the sheet-metal guard or plate 4, to cover the jointsbetween said slide and head.

In testimony whereof I affix my signature in presence of two witnesses.

EMORY S. PARSONS.

Witnesses:

PHILIP DIEHL, J Al/IES G. GREENE.

